---
title: "Ethernet configuration protocol"
url: "https://maker.wiznet.io/forum/11869"
markdown_url: "https://maker.wiznet.io/forum/11869/md"
type: "Forum topic"
category: "Serial-to-Ethernet & ConfigTool"
author: "rmg"
created: "2016-05-17T16:39:15+09:00"
last_activity: "2017-08-08T19:37:25+09:00"
language: "en"
views: 956
replies: 3
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# Ethernet configuration protocol

## Question

Asked by rmg on 2016-05-17 in Serial-to-Ethernet & ConfigTool.

I need to configure WIZ145SR modules connected to local network from a linux machine.

Where can I find the ethernet configuration protocol used by the config tool for windows v1.7 application? The application source code might also be helpful.

## Replies

### Reply 1 by jameskim, 2016-05-19

Hello,

Please refer to the below attachment.
[Message Structure and Message Flow in WIZ14xSR.pdf](https://maker.wiznet.io/forum/legacyFile.asp?path=7wWTvLnaUkrMAAIJuA56yuL3Mn8.pdf) (92 KB)

Thx.

javakys

### Reply 2 by rmg, 2016-05-20

Tahnk you

### Reply 3 by DaveB, 2017-08-08

The pdf documentation seems to be incorrect regarding the byte order of the LPort field. It appears that the word is in Little Endian (LH) order, so it should be:

ChannelInfo.LPort [2 Bytes, it indicates the Local Port number of the socket]
Example) If Local Port is 5000 ( = 0x1388), then LPort[0] = 0x88, LPort[1] = 0x13

instead of the PDF where it shows:

ChannelInfo.LPort [2 Bytes, it indicates the Local Port number of the socket]
Example) If Local Port is 5000 ( = 0x1388), then LPort[0] = 0x13, LPort[1] = 0x88

I looked at the UDP packet sent/received by the WIZ14xSRConfig_Rev 1.7 utility.

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Source: https://maker.wiznet.io/forum/11869